I've known a Heaven like a tent

I've known a Heaven like a tent
To wrap its shining yards,
Pluck up its stakes and disappear
Without the sound of boards
Or rip of nail, or carpenter,
But just the miles of stare
That signalize a show's retreat
In North America.
No trace, no figment of the thing
That dazzled yesterday,
No ring, no marvel;
Men and feats
Dissolved as utterly
As birds' far navigation
Discloses just a hue;
A plash of oars—a gayety,
Then swallowed up to view.